<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8"/>
    <!-- 加入一些不要缓存的头 -->
    <meta http-equiv="Cache-Control" content="no-cache, no-store, must-revalidate"/>
    <meta http-equiv="Pragma" content="no-cache"/>
    <meta http-equiv="Expires" content="0"/>
    <!-- 加入一些不要缓存的头 -->
    <script src="js/r_1616676522602.js"></script>
</head>
<body>
<h2>loading..</h2>
</body>
</html>